Concrete-mold.



B. E. GRANT.

CONCRETE M0LD.- APPLICATION FILED JUNE20.1912.

1,077,792. H Patented Nov. 4, 1913.

' U ITED 'srrns arnrrr oration BUR'I' E. GRANT, OF KANSAS CITY, KANSAS, ASSIGNGR' ("5 GNE'HAL'E TD EUGENE BOYNTON, OF KANSAS CITY, KANSAS.

CONCRfETE-MQLD.

Specification of Letters Patent.

Application filed June 20, 1912. Serial No. Vii 1,718.

To all whom, it may conce rn Be it known that I, BURT E. GRANT, a citizen of the United States, residing at Kansas City, in the county of lVyandotte and State of Kansas, have invented certain new and useful Improvements in Concrete- Molds, of which the following is a specification.

My invention relates to improvements in sectional molds to; be utilized in the construction of concrete walls, and the like, and my object is to provide a mold of this character consisting of sections of light, but rigid construction and having interlocking elements whereby said sections may be readily connected for use or disconnected when not in use. r

In order that the invention may be fully understood, reference will now be made to the accompanying drawings, in which:

Figure 1 is a perspective of two sections constituting my mold. Fig. 2' is a side elevation of several sections of my mold interlocked and ready for use. Fig. 3 is an enlarged horizontal section on line III-III of Fig.12. Fig. at is a vertical section of the mold in position to form a wall. Fig. 5 is a detail perspective of a spacing member forming part of the invention.

In carrying out the invention, I employ a number of sections 1, of like construction, made, preferably, from sheet-metaL so that they can be conveniently handled in setting up or taking down the mold. Each section comprises a body 'portion 2, longitudinal marginal flanges 3 and 4, and transverse marginal flanges 5 and 6, all of said flanges being bent at right angles to the body portion 2 to add rigidity thereto, so that it will not bulge when concrete is poured into the mold. The longitudinal flanges 3 and f1 are turned upward at their margins and curved inwardly and downwardly to form open heads 7 and 8 respectively, the latter being of less diameter than the former to fit into the bead 7 of a lower section, see Fig. 4. Flanges 3 and 4 and their heads 7 and 8,ihave contrally-disposed slots 9 and 10, respectively, to receive the transverse flanges 5 and 6 of the adjacent upper and lower tiers. of the sections to interlock the tiers from independent longitudinal more ment. The head 7 of an irp 'icr section is inserted in the heads 8 of two lower tions by tipping the r pper section as indicated by dotted lines, Fig, 4C.

11 designates a transverse spacing-meniber havinga pair of downturned fingers 12 at one end, and a plurality of downturned fingers 13 at its opposite end'to accommodate walls of different thicknesses, as will hereinafter appear.

In practice the sections 1 are arranged in tiers, as shown on'Figs. 2 and 4, with the heads 7 of one tier interlocking with the beads 8 of the next tier,.andthe transverse flanges 5 and 6 of one tier entering the slots 9 and 10 of the adjacent upper and lower tiers, thereby locking the tiers together both vertically and longitudinally and with the joints of one tier intermediate the joints of the other tier, as shown on Fig. 2. The tiers constituting one side of the mold. are spaced from the tiers constituting the opposite side oi. the mold to form a wall of desired thickness, and the two sides of the mold are then connected by a plurality of spacing-members 11 and wire loops 14, as shown on Fig. 4;; The wireloops 14;, which prevent the two sides of the mold from spreading when concrete is poured into the space A, extend through holes 15 in -the ends of the sections. Each loop has its free ends twisted together, as shown on Figs, 3 and Two or thr e tiers for each side-of the lYlOlC} sullice to form a wall f any desired height, because, when 7,?atented Nov, 4t, 1913,-

the wall, during the progress-of oonstruction, carried nearly to lerel with the topmost tiers, the wire loops of. the lowermost tiers are severed and the latter are placed in position upon the uppermost tiers, When the lowermos, tiers thus remored fronroppcsite sides of the wall, the remaining tiers are sup-ported by their loops 14, which extend through said. Well.

The spacing-members l1 are placed upon the uppermost sections, so that said spacinganemhcrs will not become em bedded in the wall.

.ihilc l have shown. and described my proiorrwl form of mold, I, of course,- reserve the r' to make such changes as properly tall in the spirit and scope of always mold consisting of a plurality of secslots 01" abutting sections wh n the same are tious, locking elements on the upper and arranged in tiers. lower margins of each section adapted to In testimony whereof I Mtix my signaintcrlock with corresponding elements on ture, in the presence of two witnesses. abutting sections. when the same are ar- BURT F. GRANT. ranged in tiers, said locking-elements hav- \Vitncsses: ing intervening slots, and transverse 910 F. G. LILLIAN, ments on each section adapted to enter the F. G. FISCHER. 

